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8. Shake trap dry.
Pressure Switch Removal
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in unit damage or
improper operation.
Label all wires prior to disconnection when servicing controls.
PRUDENCE
!
D'EQUIPEMENT D'OPERATION
Toute erreur de câblage peut être une source de danger et
de panne.
Lors des opérations d'entretien des commandes, étiqueter
tous les fils avant de les déconnecter.
NOTE:
There are two types of pressure switches. The
modulating pressure switch assembly has three pressure
switches. Two are side−by−side with the third switch mounted
to the back of one of the switches.
All other single and two−stage furnaces have two pressure
switches mounted back−to−back.
PSC inducer pressure switches have a tube on the back
pressure switch that connects to the port on the inducer
assembly.
Modulating pressure switches do not have a port on the rear
pressure switch
1. Remove the front pressure switch tube from the port on
the collector box. (See Figure 1)
2. Modulating − Disconnect the pressure switch harness
from the main wiring harness
Figure 1
Inducer Assembly Motor Image
Inducer Mounting Screw
Inducer Mounting Screw
443 06 5102 01
3. Remove the screws that attach the pressure switch
4. Remove the back pressure switch tube that connects to
5. Remove the wires from the back pressure switch (PSC
6. Set the pressure switches aside.
7. If the relief tube for the condensate trap is routed across
Inducer Assembly Removal
1. Remove the door bracket from the front edge of the
2. Remove the wires that connect the main wiring harness
3. Remove the condensate trap relief tube from the port on
4. Remove the screws from the tabs on inducer assembly
5. Remove the inducer assembly and set aside.
6. To avoid double gasketing and leakage, check to make
7. Remove the vent elbow from the inducer assembly and
Inducer Mounting Screw
Remove Tube(s) from
Standoffs
Pressure Switch
Pressure Switch
Mounting Screw
Motor image, component location may vary.
Specifications subject to change without notice.
Non−Modulating − remove the individual wires from the
front pressure switch.
Note the location of the wires for reassembly.
assembly to the inducer.
the inducer assembly. (PSC only)
Only). Note the location of the wires for reassembly.
the inducer assembly, remove the tube from the port on
the collector box and from the stand−offs on the inducer
and move the tube aside.
blower shelf.
to the inducer motor harness.
the collector box and the stand−offs on the inducer
housing.
that secures the inducer to the collector box. Note there
is one mounting tab directly under the vent elbow.
sure the drain gaskets for the inducer and the inducer
outlet gasket are not still attached to the collector box.
set aside.
Vent Elbow Clamp
Remove Vent Elbow
Inducer Mounting Screw
A11361
3
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